Fun off season project for my duck boat. built a 9 hp honda long tail mud motor for my home made wooden marsh boat. video filled with pics of the process and videos of the finished product in action.. If you build a mud motor from our plans, please contact seller and i will post it on our facebook page. we like to share successful projects. we like to share successful projects. the original long-tail boat motor plans. I mounted the motor on top of the tail, turned it around and through a v belt and two pulleys, managed to get the motor at max 3800rpm, to drive the prop at ~1800rpm clockwise. i turned up a nylon bush for the wet end of the tail and a bearing housing for motor end (5/8” shaft stainless).. 06 prodrive 32hp short tail mud motor - huntingnet.com forums Boss